Replacing a liner in a 16x32' inground pool

[DIYLINER]

Thanks,

I am planning on adding the 2" foam to the existing hopper bottom
Then add some 8x16 pavers to hold them in place, add sand/small rock to level off.....then compact as much as possible
Then pour a new floor on top of the sand etc..........I'm thinking of only raising the floor less then 12"

2" rigid, 2" sand etc....Then 4" concrete on top of that - would that be enough ?
I'm not sure fo the difference between concrete and cement......just the mix ?
If the vermiculite/sand/cement mix is better then I can go with that, HD has 2 cu ft vermiculite bags for $21

Smoother is better for the liner

Thanks
-Dave

[PoolDoc]

pool chart data processed . . . .

[DIYLINER]

pool chart data processed . . . .

Thanks...question regarding the pool chart data...I can't access it
On different pool volume calculators my pool volume always came out around 19,000g....which I thought was high
Mainly due to the way my pool is formed...sides that slope in etc
I always thought I could have a more accurate volume with something like autocad
Does the pool chart use a more accurate calculator ? ---since I *think* my signature volume was update to 16,600 g
Thanks !
-Dave

[PoolDoc]

An AutoCAD calculation would be WAY more accurate. The algorithm used on the Pool Chart is my own, and makes the following assumptions:

1. Break begins 1/3 of the distance from the shallow to the deep end.
2. Hopper bottom (straight slopes) rather than bowl bottom.
3. Actual water level is 6" below listed depths.

It does not account for a 4" - 6" shelf around the deep end.

Pool salesmen consistently over-estimate pool volumes, as a sales tool.

[DIYLINER]

Thanks.....great to have a closer approximation of the actual water in the pool
Raising the bottom will decrease the volume even more......easier to solar heat the pool

[PoolDoc]

Raising the bottom will decrease the volume even more......easier to solar heat the pool

Not as much as you think -- most of the heat loss in an AG pool is from the surface, and 2nd most is from the top 12" the pool sides.

[DIYLINER]

Actually it will make quite a difference, since we have a stream on the property & groundwater flow
The groundwater flow constantly cools the bottom of the pool
The 1st year we lived here we hardly used the pool as it was too cold
With solar heat the 2nd year temps were in the 80's
Insulating the bottom against the ground water flow will make a big difference, just wish the whole pool had been insulated when installed